CN1881030A

CN1881030A - Backlight assembly and liquid crystal display device

Info

Publication number: CN1881030A
Application number: CNA2006100923888A
Authority: CN
Inventors: 权伦秀; 姜正泰; 朴尚勋; 河镇镐; 张雄在
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2005-06-15
Filing date: 2006-06-02
Publication date: 2006-12-20
Also published as: US20060286831A1; JP2006351527A; US7527406B2; KR20060131248A

Abstract

A backlight assembly includes a receiving container, a first side mold, a printed circuit board and a plurality of lamps. The first side mold is on the side of the receiving container. The printed circuit board is combined with the first side mold, the printed circuit board including a plurality of conductive clips and a power supply line assembly for transmitting a lamp driving electric power. The lamps are combined with the conductive clips to generate light based on the lamp driving electric power. The power supply line assembly includes a first conductive line electrically connected to a subgroup of conductive clips and a second conductive line electrically connected to the other conductive clips. The first and second conductive lines are supplied with the lamp driving electric powers that have reverse phases to each other. Therefore, noise is decreased according to its waterfall curve to improve an image display quality.

Description

Backlight assembly and liquid crystal indicator

Technical field

The present invention relates to a kind of backlight assembly and liquid crystal display (LCD) device with this backlight assembly.More specifically, the present invention relates to the enough opposite phases of a kind of energy drives with backlight assembly that improves image displaying quality and the LCD device with this backlight assembly.

Background technology

Usually, liquid crystal display (LCD) device utilizes liquid crystal display image, and liquid crystal has the optical characteristics of anisotropic refraction rate for example and the electrical characteristics of anisotropy specific inductive capacity for example.The for example cathode ray tube (CRT) device of this LCD device and other type, plasma display panel (PDP) device etc. are compared, and have for example thinner, lower driving voltage, advantages such as energy consumption still less.Therefore, the LCD device has application widely in each demonstration field.

The LCD device comprises thin film transistor (TFT) (TFT) substrate, filter substrate and liquid crystal layer.Filter substrate is corresponding to the TFT substrate.Liquid crystal layer is inserted between TFT substrate and the filter substrate.The LCD device is non-emissive display device, and it needs backlight assembly to provide light to the LCD of LCD device screen board.

When the LCD device size increased, the size of its backlight assembly also will increase.Therefore, the LCD device of giant-screen has the backlight assembly of direct irradiation type, and it comprises a plurality of lamps on this LCD screen board rear surface.Usually, these lamps are arranged to parallel to each other, directly to light shine on this LCD screen board.

In the backlight assembly of direct irradiation type, the quantity of lamp increases.When direct irradiation type backlight assembly comprised by the external electrode fluorescent lamp of connection parallel to each other (EEFL), the driving that has reduced manufacturing expense and lamp was very stable.

In conventional direct irradiation type backlight assembly, the end of EEFL is electrically connected on the conduction fixed component, makes the lamp driving electric energy that is applied on the EEFL have same phase each other.

When the driving voltage with same phase is applied on the contiguous EEFL, between contiguous EEFL, form electromagnetic interference (EMI), make between contiguous EEFL, produce waterfall curve (waterfall curve) thus noise damages the image displaying quality of this LCD device.

Summary of the invention

The invention provides backlight assembly that the enough antiphases of a kind of energy drive to improve image displaying quality.

The present invention also provides the LCD with above-mentioned backlight assembly device.

Backlight assembly according to an aspect of the present invention comprises admits container, the first side form product, printed circuit board (PCB) and a plurality of lamp.This first side form product is admitted a side of container at this.This printed circuit board (PCB) combines with this first side form product, and this printed circuit board (PCB) comprises a plurality of conductive clips and is used to transmit the electrical cord assembly of lamp driving electric.This lamp combines with this conductive clip with luminous when receiving this lamp driving electric.

This electrical cord assembly can comprise first conductor wire of the child group that is electrically connected to this conductive clip, and be not electrically connected to not with conductive clip that this first conductor wire is connected on second conductor wire.The lamp driving electric that is applied on this first and second conductor wire can have opposite phases each other.

This backlight assembly can also comprise and combining with this first side form product to cover the second side form product of printed circuit board (PCB) and outer electrode.This second side form product can also comprise a plurality of insulation partition walls, and it extends towards printed circuit board (PCB) between conductive clip.

Backlight assembly according to another aspect of the present invention comprises admits container, printed circuit board (PCB) and a plurality of lamp.This printed circuit board (PCB) is received within this admittance container, and comprises a plurality of conductive clips and be used to transmit the electrical cord assembly of lamp driving electric.This power lead comprises first conductor wire and second conductor wire.This first conductor wire is electrically connected with the child group of conductive clip.This second conductor wire is electrically connected with the conductive clip that is not connected with this first conductor wire.Described lamp combines with this conductive clip with according to the lamp driving electric that receives and luminous.

Liquid crystal indicator according to an embodiment of the invention comprises backlight assembly and display unit.This backlight assembly comprises admits container, the first side form product, printed circuit board (PCB) and a plurality of lamp.This first side form product is admitted a side of container at this.This printed circuit board (PCB) combines with this first side form product, and this printed circuit board (PCB) comprises a plurality of conductive clips and is used to transmit the electrical cord assembly of lamp driving electric.This lamp combines with this conductive clip with according to receiving this lamp driving electric and luminous.This display unit is according to the light display image that produces from this backlight assembly.

According to the present invention, this lamp driving electric is applied to the driving method of antiphase and makes on the external electrode fluorescent lamp and reduce noise level according to its waterfall curve, improves the image displaying quality of this LCD device.

Description of drawings

Detailed description by illustrative examples and with reference to the accompanying drawings, above-mentioned and other advantage of the present invention will be more obvious, in the accompanying drawings:

Fig. 1 shows the decomposition diagram of backlight assembly according to an embodiment of the invention;

Fig. 2 is for showing the skeleton view of backlight assembly shown in Figure 1;

Fig. 3 is the skeleton view of printed circuit board (PCB) in the displayed map 1 (PCB);

Fig. 4 is the planimetric map of PCB among Fig. 3;

Fig. 5 is the skeleton view of the rear surface of the second side form product in the displayed map 1;

Fig. 6 is the planimetric map of PCB according to another embodiment of the invention; And

Fig. 7 is for showing the decomposition diagram of LCD device according to an embodiment of the invention.

Embodiment

Below with reference to accompanying drawing the present invention is described in more detail, has shown embodiments of the invention in the accompanying drawing.But the present invention can utilize different modes to implement and be not limited to described embodiment.But for exposing fully and passing on scope of the present invention that these embodiment are provided to those skilled in the art fully and fully.For the sake of clarity, the size in each layer and zone and relative dimensions are exaggerated in the accompanying drawings.

Should be understood that, when an element or layer are known as " last ", " being connected to " or " being couple to " another element or layer, its can be directly another element or the layer on, be connected to or be couple to another element or the layer, perhaps can have betwixt other element or the layer.On the contrary, when an element is called on " directly last ", " being directly connected to " or " directly being couple to " another element or the layer, then there be not other element or layer betwixt.Similar Reference numeral is represented similar elements in full.As term as used herein " and/or " comprise one or more relevant any and all combinations that are listed term.

Can be used to describe various elements, parts, zone, layer and/or part though should be understood that the term first, second, third, etc. at this, these elements, parts, zone, layer and/or part should not be subjected to the restriction of these terms.These terms only are used to distinguish an element, parts, zone, layer and/or part and another zone, layer and/or part.Therefore, first element that is discussed below, parts, zone, layer and/or part can be called as second element, parts, zone, layer and/or part and can not break away from instruction of the present invention.

For convenience of description, here used the spatial relationship term, for example " ... under ", " ... following ", " being lower than ", " ... top ", " top " etc., to describe as shown in drawings the relation of an element or part and another element and part.Should be understood that this spatial relationship term attempt to comprise except the direction of being drawn in the accompanying drawings this device use or operation in different directions.If for example this device is turned in the drawings, be described to " under other element or the part or beneath " element can be oriented as " on other element or part " then.Therefore, schematically term " ... down " can comprise above and following two orientations.This device can for other orientation (revolve and turn 90 degrees or other orientation) and correspondingly explain spatial relationship descriptor as used herein.

The term purpose only is to describe specific embodiment rather than will limits the present invention as used herein.Also comprise most forms as singulative " " and " being somebody's turn to do " as used herein, unless beyond its context clearly indicates.It is also to be understood that, when term " comprises " when being used for this instructions, show and have described part, integral body, step, operation, element and/or parts, but do not get rid of to exist or add one or more other parts, integral body, step, operation, element and/or parts are not arranged yet, and/or its combination.

In this cross-section illustration the embodiment of the invention is described with reference to the indicative icon of the embodiment (and intermediate structure) that idealizes as the present invention.Like this, can infer departing from from shape shown as manufacturing technology for example and/or tolerance results.Therefore, the embodiment of the invention should not be restricted at the given shape in this diagram zone but for example comprise owing to be manufactured in shape change.For example, the injection zone of an illustrated rectangle has circular or crooked shape usually and/or changes at the slope of the implantation concentration at its edge rather than from the binary that is injected into non-injection region.Similarly, the buried region that is formed by injection can cause some injection between the surface of this hidden area and this injection generation.Therefore, illustrated in the drawings zone is essentially schematically and their shape is not will illustrate the true form in device zone and do not limit the scope of the invention.

Unless other qualification is arranged, all as used herein term have (comprising technical and scientific terminology) implication of those skilled in the art's common sense.Those terms of limiting of general dictionary it is also to be understood that these terms, unless for example should be interpreted as having the corresponding to implication of implication in the context with correlation technique and will not make an explanation with idealized or excessively formal meaning and limited especially at this.

Below with reference to the accompanying drawings the present invention is described in detail.

Fig. 1 shows the decomposition diagram of backlight assembly according to an embodiment of the invention.The skeleton view of the backlight assembly of Fig. 2 displayed map 1.

With reference to Fig. 1 and 2, this backlight assembly 100 comprises an admittance container 110, the first side form product 120, printed circuit board (PCB) (PCB) 200 and a plurality of lamp 130.

This admittance container 110 comprises bottom 112 and sidepiece 114.This sidepiece 114 extends to form the admittance space from the edge of this bottom 112.This admittance container 110 can have solid metal, and it can not be out of shape.

The first side form product 120 in a side of this admittance container 110, and fits together with the end of lamp 130 in this admits container 110.In Fig. 1 and 2, two first side form products 120 admit the both sides of container 110 to arrange and combine with the end of lamp 130 along this.Each first side form product 120 comprises bound fraction 122 and sidewall 124.This bound fraction 122 combines with PCB 200.Sidewall 124 stretches out with the direction on the surface that is substantially normal to bound fraction 122 from bound fraction 122.Bound fraction 122 is parallel with the bottom 112 of admitting container 110 in assembly.Sidewall 124 is parallel with the sidepiece 114 of admitting container 110.The first side form product 120 comprises the feasible admittance container 110 and PCB 200 electrical isolations with metal of insulating material.

This PCB 200 is fixed to and is positioned on the first side form product 120 of admitting container 110 sides.This PCB 200 comprises a plurality of conductive clips 210 and electrical cord assembly 220.This lamp 130 is electrically connected on the PCB 200 by this conductive clip 210.Electrical cord assembly 200 transmission lamp driving electric are to lamp 130.

This electrical cord assembly 220 is electrically connected on this conductive clip 210 being transferred to from the lamp driving electric of inverter 170 on this conductive clip 210.This conductive clip 210 comprises that metal is being transferred on the lamp 130 from the lamp driving electric of power lead.

This PCB 200 is fixed on the first side form product 120 by screw.Perhaps, this PCB 200 can be fixed to by the binding element of for example adhesive tape on the first side form product 120.

Lamp 130 combines with the conductive clip 210 of PCB 200, and lamp 130 is parallel to each other substantially.Lamp 130 is external electrode fluorescent lamp (EEFL), and it has outer electrode 132 on the outside surface corresponding to the end, and this conductive clip 210 is fixed on this end.And luminous, this lamp driving electric is produced and is applied on the outer electrode 132 by electrical cord assembly 220 and conductive clip 210 by inverter 170 this external electrode fluorescent lamp 130 according to the lamp driving electric that receives.

Fig. 3 shows the skeleton view of printed circuit board (PCB) as shown in Figure 1.Fig. 4 shows the planimetric map of PCB shown in Figure 3.

Referring to figs. 1 to 4, this PCB comprises conductive clip 210 and electrical cord assembly 220.

This conductive clip 210 comprises that metal is to supply the outer electrode 132 of this lamp driving electric to this lamp 130 by electrical cord assembly.

This conductive clip 210 is stretched out to form opening by the upper surface of this PCB 200.Lamp 130 is inserted in the opening of this conductive clip 210.

This conductive clip 210 can separate constant distance on PCB 200 makes the lamp 130 constant distance that is spaced.Perhaps, this conductive clip 210 distance that can separate variation makes lamp 130 be spaced with the distance that changes.

This conductive clip 210 is welded on the PCB 200.Perhaps conductive clip 210 can be integrated on the PCB.Conductive clip 210 also can be by conducting electricity gluing sticking on this PCB 200.

Patterned metal layer is to form electrical cord assembly 220 on PCB.This electrical cord assembly 220 is electrically connected so that the lamp driving electric is transferred to conductive clip 210 from inverter 170 with conductive clip 210.

Electrical cord assembly 220 comprises first conductor wire 222 and second conductor wire 224.Be electrically connected with first conductor wire 222 every one conductive clip 210a.Other conductive clip 210b is electrically connected with second conductor wire 224.

Drive in the process of lamp 130 in antiphase, first and

second conductor wires

222 and 224 are provided with the lamp driving electric.The electric power that is fed to first conductor wire has and the electric power opposite phases that is fed to second conductor wire.

Particularly, comprise first alternating current and second alternating current from the lamp driving electric of inverter 170, both have essentially identical frequency.First alternating current has and the second alternating current opposite phases.First alternating current is applied to conductive clip 210a every one by first conductor wire 222.Second alternating current is applied to other conductive clip 210b by second conductor wire 224.Therefore, first alternating current is applied on that part of lamp 130 that is electrically connected with the conductive clip 210a of odd indexed, and second alternating current is applied on the remainder lamp 130 that is electrically connected with the conductive clip 210a of even number sequence number.

First and second alternating currents that have opposite phase each other are applied on the adjacent lamp 130 to reduce the noise that produces owing to the waterfall curve.According to this embodiment, this electrical cord assembly 220 can utilize any suitable mode to be connected on the conductive clip 210.

PCB 200 can also comprise connector 230, and it is electrically connected so that the lamp driving electric is transferred on the PCB 200 between PCB 200 and transmission line 172.This transmission line 172 is electrically connected with first and

second conductor wires

222 and 224 by connector 230.When this transmission line 172 is electrically connected with first and

second conductor wires

222 and 224 by connector 230, can omit and be used for transmission line 172 is electrically connected to welding technology on first and

second conductor wires

222 and 224, therefore simplify the manufacture process of backlight assembly 100.

On PCB 200, can form insulation course with protection electrical cord assembly 200.

Refer again to Fig. 1, backlight assembly 100 can also comprise the second side form product 140, and it combines with the first side form product 120 to cover PCB 200.

The second side form product 140 stops non-luminous outer electrode, therefore reduces the homogeneity of shadow region and increase brightness.The second side form product 140 supports to be positioned at the optical component 160 on the second side form product 140, to guide this optical component 160.The second side form product 140 can have leader 142 with guided optical member 160.

Fig. 5 shows the skeleton view of the rear surface of the second side form product as shown in Figure 1.

Comprise upper face 143 and inclined surface 144 with reference to figure 1 and 5, the second side form products 140.The upper face 143 of this second side form product 140 is parallel with the bottom 112 of admitting container 110 basically.This inclined surface 144 is with respect to the angle tilt of upper face 143 to be scheduled to.Form a plurality of otch 145 on inclined surface 144, they are spaced from each other with assembling lamp 130.

Comprise upper face 143, the first inclined surface 144a and the second inclined surface 144b with reference to figure 1 and 5, the second side form products 140.Upper face 143 is parallel with the bottom 112 of admitting container 110 basically.This first inclined surface 144a is with respect to the angle tilt of upper face 143 to be scheduled to.The second inclined surface 144b is extended with the direction that is orthogonal to this bottom 112 by first inclined surface.Form a plurality of otch 145 on the second inclined surface 144b, they are spaced from each other with assembling lamp 130.

The second side form product 140 can also comprise that a plurality of insulation partition walls 146 between conductive clip 210 make conductive clip 210 separate each other to reduce the electromagnetic interference (EMI) between adjacent conductive folder 210.

The second side form product 140 can also comprise a plurality of towards PCB 200 from upper face the 143 insulation partition walls 146 that stretch out.In assembling, this insulation partition wall 146 is disposed between the adjacent conductive folder 210 of PCB 200 and makes this conductive clip 210 be spaced each other.Like this, this insulation partition wall 146 guarantees to have sufficient clearance for insulation between conductive clip 210, prevents or reduces because the distorted signals that out of phase causes between first alternating current and second alternating current.This distorted signals is included in the electromagnetic interference (EMI) of 210 on adjacent conductive folder.First and second alternating currents are produced by inverter 170.

Fig. 6 shows the planimetric map of PCB in accordance with another embodiment of the present invention.

With reference to figure 5 and 6, this PCB 300 comprises a plurality of conductive clips 310, electrical cord assembly 320 and connector 330.This electrical cord assembly 320 comprises first conductor wire 322 and second conductor wire 324.

The conductive clip 310 of Fig. 6, electrical cord assembly 320 and connector 330 are with shown in Figure 4 identical.Therefore will omit being repeated in this description to them.

Between the conductive clip on the PCB 300 310, form a plurality of holes 340.This hole 340 is corresponding with the insulation partition wall 146 of the second side form product 140.When the second side form product 140 combined with PCB 300, insulation partition wall 146 was inserted in the hole 340 of PCB 300.

When insulation partition wall 146 when being inserted into, this insulation partition wall 146 prevents that adjacent conductive from pressing from both sides 310 by electrical short in the hole 340 in, makes that pressing from both sides 310 electrical isolation in adjacent conductive is strengthened.

With reference to figure 1, this backlight assembly 100 can also comprise reflecting plate 150, optical component 160 and inverter 170 again.Reflecting plate 150 is below lamp 130.Optical component 160 is on lamp 130.Inverter 170 produces the lamp driving electric.

Reflecting plate 150 is positioned on the bottom 112 of admitting container 110, and the preceding lateral reflection of light from this reflecting plate 150 towards this backlight assembly 100 that is produced by lamp 130.This reflecting plate 150 comprises highly reflective material.The example that can be used for the highly reflective material of this reflecting plate 150 comprises polyethylene terephthalate (PET) and polycarbonate (PC).Perhaps, admit container 110 can comprise that highly reflective material makes this reflecting plate 150 to be omitted.

Optical component 160 is positioned at above the lamp 130 to improve the optical characteristics of the light that is produced by lamp 130.This optical component 160 comprises diffusing panel 162 and optical sheet 164.The light diffusion that diffusing panel 162 produces lamp 130.Optical sheet 164 improves the luminance brightness of passing through diffusing panel 162.

The light that diffusing panel 162 diffusions are produced by lamp 130 is to improve the homogeneity of brightness.Diffusing panel 160 has the tetragonal shape of being essentially of predetermined thickness.Diffusing panel 160 is supported to make it separate with lamp 130 within a predetermined distance by the second side form product 140.For example, diffusing panel 162 comprises polymethylmethacrylate (PMMA) and diffusion agent.

Optical sheet 164 is on diffusing panel 162.164 pairs of brightness of passing through the light of diffusing panel 162 by the light channeling conduct of diffusing panel 162 diffusions with raising of optical sheet.Optical sheet 164 can comprise prismatic lens, and it improves brightness when observing in the plane.Optical sheet 164 can comprise the diffusion disk that increases brightness uniformity.Optical sheet 164 can also comprise reflecting polarizer, and its transmission part light and the light that reflects remainder improve brightness to reclaim light.Perhaps, in order to obtain the brightness of level of hope, backlight assembly 100 can also comprise additional optical sheet or omit one of optical sheet 164.

Inverter 170 drives the lamp driving electric of lamp 130 with generation on the rear surface of admitting container 110.This inverter 170 improves the outside voltage levvl that provides to apply the lamp driving electric as alternating current to lamp.

In Fig. 4, the lamp driving electric that is produced by inverter 170 is applied on the PCB by transmission line 172 and connector 230.The lamp driving electric that is produced by inverter 170 comprises first alternating current and second alternating current.Second alternating current has identical size with first alternating current basically but phase place is opposite.

During antiphase drives lamp 130, by first conductor wire 222, first alternating current is applied to the conductive clip 210a every, and by second conductor wire 224, second alternating current is applied on the conductive clip 210b, makes first and second alternating currents be applied on the conductive clip 210 in the mode that replaces.

Fig. 7 shows the decomposition diagram of LCD device according to an embodiment of the invention.

With reference to figure 7, LCD device 400 comprises backlight assembly 100 and display unit 500.Backlight assembly 100 produces light.Display unit 500 is according to the light display image that produces from backlight assembly 100.

Except intermediate die product 410, Fig. 1 identical in the display device of Fig. 6 and Fig. 7.Therefore use identical Reference numeral for identical or similar parts, and omit further describing them with description in Fig. 1 to 6.

Intermediate die product 410 combines optical component 160 is fixed in the admittance container 110 with admitting container 110.The peripheral part of intermediate die product 410 fixing optical members 160 is to admitting on the container 110, and combines with the sidepiece 114 of admitting container 110.This intermediate die product 410 is directed to its correct position with LCD screen board 510.When the size of middle moulded parts 410 increases, section that this intermediate die product 410 can be manufactured into a plurality of (for example two or four), these sections can in conjunction with and form this intermediate die product 410.

Display unit 500 comprises LCD screen board 510 and driving circuit section 520.This LCD screen board 510 is positioned at above the backlight assembly 100 with display image.This driving circuit section 520 produces control signal to drive LCD screen board 510.

This LCD screen board 510 comprises first substrate 512, second substrate 514 and liquid crystal layer 516.Second substrate 514 is roughly parallel with first substrate 512.Between first and

second substrates

512 and 514, insert liquid crystal layer 516.

First substrate 512 comprises a plurality of thin film transistor (TFT)s (TFT) that are arranged to matrix structure.For example, first substrate 512 comprises clear glass.Source electrode (not shown), gate electrode (not shown) and the drain electrode (not shown) of each TFT are electrically connected to (not shown) on data line, gate line and the pixel electrode respectively.This pixel electrode (not shown) comprises transparent conductive material.

Second substrate 514 is a filter substrate, and it comprises red, green and blue red pixel, green pixel and the blue pixel of demonstration respectively.Second substrate 514 also comprises the public electrode (not shown), and it has transparent conductive material.

When driving voltage was applied to the gate electrode of each TFT, this TFT conducting formed electric field between pixel electrode (not shown) and public electrode (not shown).The arrangement of the liquid crystal layer 516 of electric field between first and

second substrates

512 and 514 by being applied to liquid crystal layer 516 changes, and makes the luminous transparency of liquid crystal layer 516 change.By changing the optical transmission degree, produce hope image with predetermined gray scale.

Driving circuit section 520 comprises data pcb (PCB) 522, grid PCB 524, data drive circuit film 526 and gate driver circuit film 528.Data PCB 522 applies data drive signal to LCD screen board 510.Grid PCB 524 applies gate drive signal to LCD screen board 510.Data PCB 522 is electrically connected with this LCD screen board 510 by data drive circuit film 526.Grid PCB524 is electrically connected with LCD screen board 510 by gate driver circuit film 528.Each data drive circuit film 526 and gate driver circuit film 528 comprise that band carries chip (COF) on encapsulation (TCP) or the film.Perhaps, forming additional line on LCD screen board 510 and this gate driver circuit film 528 makes this grid PCB524 to be omitted.

This LCD device 400 can also comprise display unit 500 is fixed to top frame 420 on the backlight assembly 100.This top frame 420 combines so that LCD screen board 510 is fixed on the backlight assembly 100 with admitting container 110.This data drive circuit film 526 is made data PCB 522 on the side surface of admitting container 110 or on the rear surface towards the rear surface bending of admitting container 110.This top frame 420 can comprise the solid metal that does not produce distortion.

According to the present invention, PCB comprises the conductive clip that combines with external electrode fluorescent lamp and is used to transmit the electrical cord assembly of lamp driving electric, thereby the mode that drives with antiphase is applied to the lamp driving electric on this external electrode fluorescent lamp.

And, reduce noise according to the waterfall curve, indicate the raising of the image displaying quality of LCD device.

Invention has been described by the reference illustrative examples, and still, clearly, for those of ordinary skills, by aforesaid instruction, many replacement change or modification are conspicuous.Therefore, the present invention comprises replaceable change and the modification in all such essence that fall into claims and the scope.

Claims

1. backlight assembly comprises:

Admit container;

The first side form product is positioned at a side of this admittance container;

Printed circuit board (PCB), it combines with the described first side form product, and this printed circuit board (PCB) comprises a plurality of conductive clips and is used to transmit the electrical cord assembly of lamp driving electric; And

A plurality of lamps that combine with this conductive clip are with luminous when receiving described lamp driving electric.

2. backlight assembly as claimed in claim 1, wherein this conductive clip stretches out from described printed circuit board (PCB) and makes lamp combine with this conductive clip.

3. backlight assembly as claimed in claim 2, wherein this conductive clip is welded on the described printed circuit board (PCB).

4. backlight assembly as claimed in claim 2, wherein this conductive clip separates each other with constant distance.

5. backlight assembly as claimed in claim 1, wherein this electrical cord assembly comprises:

First conductor wire, it is electrically connected to the child group of described conductive clip; And

Second conductor wire, it is electrically connected to the conductive clip that is not connected with described first conductor wire.

6. backlight assembly as claimed in claim 5, wherein said first and second conductor wires are subjected to the reciprocal lamp driving electric of phase place.

7. backlight assembly as claimed in claim 1, wherein said lamp comprises external electrode fluorescent lamp, it has outer electrode at the outside surface corresponding to the end of fixing this conductive clip.

8. backlight assembly as claimed in claim 1 comprises that also the second side form product that combines with the described first side form product is to cover described printed circuit board (PCB) and this outer electrode.

9. backlight assembly as claimed in claim 8, the wherein said second side form product also comprises a plurality of insulation partition walls, it extends towards described printed circuit board (PCB) between described conductive clip.

10. backlight assembly as claimed in claim 9, a plurality of holes that wherein on described printed circuit board (PCB), are formed for admitting described insulation partition wall.

11. backlight assembly as claimed in claim 1 also comprises:

Reflecting plate under described lamp;

Optical component on described lamp; And

Inverter, it produces described lamp driving electric, is connected with described electrical cord assembly.

12. backlight assembly as claimed in claim 11, wherein said printed circuit board (PCB) also comprises connector, and it is electrically connected on the transmission line that is connected with described inverter.

13. backlight assembly as claimed in claim 11, wherein said optical component comprises:

The described diffusion of light plate of diffusion; And

At least one improves the optical sheet of the brightness of this light on described diffusing panel.

14. a backlight assembly comprises:

Admit container;

Be received in the printed circuit board (PCB) in this admittance container, this printed circuit board (PCB) comprises a plurality of conductive clips and is used to transmit the electrical cord assembly of lamp driving electric that this electrical cord assembly comprises:

Second conductor wire is on the conductive clip that it is not electrically connected to not with described first conductor wire is connected; And

The lamp that a plurality of and described conductive clip combines is with luminous when the described lamp driving electric that receives.

15. backlight assembly as claimed in claim 14, wherein said first and second conductor wires are subjected to the described lamp driving electric with phase place opposite each other.

16. backlight assembly as claimed in claim 15, wherein said lamp comprises external electrode fluorescent lamp, and it has outer electrode at the outside surface corresponding to the end of fixing this conductive clip.

17. a liquid crystal indicator comprises:

Optical assembly, it comprises:

Admit container;

A plurality of lamps that combine with this conductive clip are with luminous when receiving described lamp driving electric; And display unit, it is based on the light display image that produces from described backlight assembly.

18. liquid crystal indicator as claimed in claim 17, wherein said lamp comprises external electrode fluorescent lamp, and it has outer electrode at the outside surface corresponding to the end of fixing this conductive clip.

19. liquid crystal indicator as claimed in claim 18, wherein this electrical cord assembly comprises:

Second conductor wire, it is electrically connected to the conductive clip that is not connected with first conductor wire.

20. liquid crystal indicator as claimed in claim 19, wherein said first and second conductor wires are subjected to the described lamp driving electric with phase place opposite each other.

21. liquid crystal indicator as claimed in claim 18, wherein said backlight assembly comprise that also the second side form product that combines with the described first side form product is to cover described printed circuit board (PCB).

22. liquid crystal indicator as claimed in claim 21, the wherein said second side form product also comprises:

A plurality of insulation partition walls that between described conductive clip and towards described printed circuit board (PCB), extend; And

Be formed on a plurality of holes that are used to admit described insulation partition wall on the described printed circuit board (PCB).

23. liquid crystal indicator as claimed in claim 17, wherein said display unit comprises:

Liquid crystal display panel, its on described backlight assembly with display image; And

Driving circuit section, it produces control signal and is used to drive described liquid crystal display panel.